Optical element apparatus for two-dimensional controllable localized partition backlight module

Abstract

The optical element apparatus for two-dimensional controllable localized partition backlight module is disclosed. The optical element apparatus comprises of a plurality of optical units which include a plurality of point light sources, light guides and collimating sheets. The point light source is located at the center of the light guide. The light guide includes the incident surface, the bottom place connecting with the light incident surface, and the light output surface. There are micro structures on the bottom place of the light guide and the top surface of the collimating sheet.

1. A two-dimensional controllable localized partition backlight module optical element apparatus having a light-collecting function and an output-light-field-pattern being the same with the contour of the optical unit, comprising:
 a light guide having a metal reflective layer thereon, the light guide comprising: 
 a plurality of optical units, comprising: 
 a point light source; 
 a central hole; 
 a first light incident surface of the light guide around the central hole; and 
 a first light output surface of light guide with an edge and a bottom surface of the light guide, wherein the bottom surface of the light guide has a plurality of light guide micro structures, the plurality of light guide micro structures being selected from the group consisting of a concave curve structure, a convex curve structure and a polygonal structure, and a first pattern direction of the light output surface micro structures being selected from the group consisting of a light-shaft symmetry direction and a light-shaft asymmetry direction, the point light source being located at the central hole of the optical unit; and 
 a collimating sheet having a square contour based on a contour of the light guide and the collimating sheet being located at a top of the light guide, comprising: 
 a second light incident surface of the light guide; and 
 a second light output surface of the light guide having a plurality of the second light output surface micro structures being selected from the group consisting of a concave curve structure, a convex curve structure and a polyhedral structure on the second light output surface of the light guide, a second pattern direction of the second light output surface micro structures being selected from the group consisting of a light-shaft symmetry direction and a light-shaft asymmetry direction around the point light source being the center, so that when an output light leaving the first light output surface of the light guide at a specific angle, and irradiating to the second light incident surface of the light guide, an output light being controlled at a normal line direction of the collimating sheet by through two times of refraction, on order to reach a light collecting effect, therefore the collimating sheet is connected to the optical unit to form the two-dimensional controllable localized partition backlight module optical element apparatus. 
 
   
   
     2. The apparatus according to  claim 1 , wherein a shape of the light guide is selected from the group consisting of a square shape, a hexagon shape and a polygon shape. 
   
   
     3. The apparatus according to  claim 1 , wherein the metal reflective layer comprises aluminum.